Thanks everyone for your advice. It's very helpful to see the different points of views and the pros and cons. I have had a discussion with the parents and we are now trying and reducing the amount of breakfast. We are also cutting back on milk and yogurt and see what happens. I'm going to play it by ear for this week only because they have a doctor's note. If he throws up again this week, I will have to assess the situation i.e. does he have other symptoms, does he want to participate, is anyone else showing symptoms etc. I hear what you are saying Suzie_Homemaker about it coming back to bite you in the butt. That's happen to me before too. I'm going to see how it goes by the end of the week. Thanks again everyone. I really appreciate all the responses.